Welcome to 2CarPros.
Here is everything I have on the IAC and testing. The attached pics correlate with the directions. Let me know if this helps. Note: A 1.5L wasn't an option, so since it is the 4A-FE engine, I think you meant 1.6L. Let me know if that is wrong.
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1995 Toyota Corolla Sedan 4-Door L4-96.8 1587cc 1.6L DOHC (4A-FE)
Idle Air Control (IAC) Valve Circuit
Vehicle Powertrain Management Computers and Control Systems Testing and Inspection Component Tests and General Diagnostics Idle Air Control (IAC) Valve Circuit
CIRCUIT DESCRIPTION
pic 1
The rotary solenoid type idle air control (IAC) valve is situated on the intake air chamber. Intake air bypassing the throttle valve is directed to the IAC valve through a passage. In this way the intake air volume bypassing the throttle valve is regulated, controlling the engine speed.
The ECM operates only the IAC valve to perform idle-up and provide feedback for the target idling speed. A vacuum switching valve (VSV) for idle-up control is also added (for air conditioning).
WIRING DIAGRAM
pic 2
CIRCUIT INSPECTION PROCEDURE
pic 3
pic 4
pic 5
pic 6
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Also, here is a link that explains how to get trouble codes from this vehicle. You don't need a scanner for it.
https://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995
Let me know if this helps or if you have other questions.
Take care,
Joe
Images (Click to enlarge)
Jul 6, 2019 at 8:45 PM
